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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7240) Add more states and transitions to stabilize the NM Container state machine
Date Mon, 25 Sep 2017 21:17:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16179806#comment-16179806
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Arun Suresh commented on YARN-7240:
-----------------------------------

bq. Requeing the containers to the front of the queuedGuaranteed or queuedOpprotunistic queues
would require to change the datastructures or we have to put use some temporary auxiliary
queues to move this element.
Yeah, this should be fine for now. Lets tackle this in a separate JIRA if really required.

> Add more states and transitions to stabilize the NM Container state machine
> ---------------------------------------------------------------------------
>
>                 Key: YARN-7240
>                 URL: https://issues.apache.org/jira/browse/YARN-7240
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Arun Suresh
>            Assignee: kartheek muthyala
>         Attachments: YARN-7240.001.patch, YARN-7240.002.patch, YARN-7240.002.patch
>
>
> There seem to be a few intermediate states that can be added to improve the stability
of the NM container state machine.
> For. eg:
> * The REINITIALIZING should probably be split into REINITIALIZING and REINITIALIZING_AWAITING_KILL.

> * Container updates are currently handled in the ContainerScheduler, but it would probably
be better to have it plumbed through the container state machine as a new state, say UPDATING
and a new container event.
> The plan is to add some extra tests too to try and test every transition.



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